A study in the Dec. 15 issue of the Journal of Clinical Sleep Medicine shows that after a one-hour delay of school start times, teens increased their average nightly hours of sleep and decreased their "catch-up sleep" on the weekends, and they were involved in fewer auto accidents.When school started one hour later students averaged from 12 minutes (grade nine) to 30 minutes (grade 12) more self-reported nightly sleep. The percentage of students who got at least eight hours of sleep per...

Insomnia complaints among college students are significantly associated with a decline in school performance based on self-reported grade-point average (GPA), according to a research abstract that will be presented on Monday at SLEEP 2008, the 22nd Annual Meeting of the Associated Professional Sleep Societies (APSS).

Yawning away your workday? So are many Americans -- an estimated 47 million of us are sleep-deprived, and insomnia is the most common sleep complaint reported by women and men across all stages of adulthood, according to the National Institutes of Health.

By Charnicia E. Huggins NEW YORK (Reuters Health) - As school doors open across the
country, teenagers should be sure to adjust their summer sleep
schedule to their new school schedule, experts advise.

LONDON (Reuters) - Melatonin is described as a natural
nightcap but researchers said on Friday there is no scientific
evidence that it relieves jet lag. The hormone, which is available in over-the-counter
supplements, helps regulate the body's daily rhythms.

LONDON (Reuters) - Melatonin is described as a natural
nightcap but researchers said on Friday there is no scientific
evidence that it relieves jet lag. The hormone, which is available in over-the-counter
supplements, helps regulate the body's daily rhythms.

A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.